Comparison Opel Signum 1.9 CDTI (120 Hp) & Chevrolet Corvette Convertible (C7) Stingray 6.2 V8 (466 Hp) Automatic & Audi A4 (B8 8K, facelift 2011) 2.0 TDI (143 Hp)
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| Brand: | Opel | Chevrolet | Audi |
| Model: | Signum | Corvette | A4 |
| Generation: | Signum | Corvette Convertible (C7) | A4 (B8 8K, facelift 2011) |
| Engine / modification: | 1.9 CDTI (120 Hp) | Stingray 6.2 V8 (466 Hp) Automatic | 2.0 TDI (143 Hp) |
| Production start: | 2004 year | 2014 year | 2011 year |
| Production end: | 2005 year | 2013 year | |
| Coupe type: | Hatchback | Cabriolet | Sedan |
| Num. of Doors: | 5 | 2 | 4 |
| Num. of seats: | 5 | 2 | 5 |
| Fuel consumption / economy - urban: | 7.7 l/100 km | 19.2 l/100 km | 5.4 l/100 km |
| Fuel consumption / economy - extra urban: | 5 l/100 km | 8.2 l/100 km | 4.0 l/100 km |
| Fuel consumption / economy - combined: | 6 l/100 km | 12.3 l/100 km | 4.5 l/100 km |
| Fuel Type: | Diesel | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.33 | 0.26 | |
| Fuel tank volume: | 61 l | 70 l | 63 l |
| Emission standard: | EURO VI | EURO V | |
| CO2 emissions: | 162 g/km | 282 g/km | 119 g/km |
| Power: | 120 hp | 466 hp | 143 hp |
| Max power in: | 3250 rpm. | 6000 rpm. | 4200 rpm. |
| Maximum speed: | 191 km/h | 280 km/h | 215 km/h |
| Acceleration from 0 to 100 km/h: | 12.2 sec | 4.2 sec | 9.2 sec |
| Torque: | 280 Nm @ 2000 rpm. | 630 Nm/4600 rpm. | 320 Nm/1750-2500 rpm. |
| Engine position: | Front, transverse | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 1910 cm3 | 6162 cm3 | 1968 cm3 |
| Fuel System: | Diesel Commonrail | Multi-point injection | Diesel Commonrail |
| Aspiration / Turbine: | Turbocharging | Turbo / Intercooler (Turbocharging / Intercooler) | |
| Position of cylinders: | Inline | V engine | Inline |
| Valvetrain: | DOHC | DOHC | |
| Number of cylinders: | 4 | 8 | 4 |
| Number of valves per cylinder: | 2 | 2 | 4 |
| Compression ratio: | 17.5 | 11.5 | 16.5 |
| Piston Stroke: | 90.4 mm | 92 mm | 95.5 mm |
| Cylinder Bore: | 82 mm | 103.25 mm | 81 mm |
| Wheel Drive: | Front wheel drive | Rear wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 8 | ||
| Number of Gears (manual transmission): | 6 | 6 | |
| Length: | 4636 mm | 4492 mm | 4701 mm |
| Width: | 1798 mm | 1872 mm | 1826 mm |
| Width including mirrors: | 2040 mm | ||
| Height: | 1460 mm | 1243 mm | 1427 mm |
| Wheelbase: | 2830 mm | 2711 mm | 2808 mm |
| Front track: | 1524 mm | 1600 mm | 1564 mm |
| Rear (Back) track: | 1525 mm | 1568 mm | 1551 mm |
| Front overhang: | 862 mm | ||
| Rear overhang: | 1031 mm | ||
| Minimum volume of Luggage (trunk): | 365 l | 171 l | 480 l |
| Maximum amount of Luggage (trunk): | 1410 l | 243 l | 962 l |
| Front suspension: | Coil spring | Double wishbone | Multi-link suspension |
| Rear suspension: | Helical spring | Double wishbone | Independent on trapezoidal lever |
| Max weight: | 2130 kg | 1840 kg | 2030 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs | Disc |
| Kerb Weight: | 1545 kg | 1734 kg | 1480 kg |
| ABS: | yes | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering | Electric Steering |
| Max. roof load: | 90 kg | ||
| Permitted trailer load with brakes (8%): | 1800 kg | ||
| Minimum turning circle (turning diameter): | 11.5 m | 11.5 m | |
| Permitted trailer load with brakes (12%): | 1600 kg | ||
| Permitted trailer load without brakes: | 750 kg | ||
| Permitted towbar download: | 80 kg | ||
| Tire size: | 215/55 R16 | 225/55 R16 | |
| Wheel rims size: | 6.5J x 16 | 7.5J x R16 |